Writing instrument



FIG. 1 is an isometric view of a writing instrument showing our new design;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a back view of FIG. 1;

FIG. 4 is a right side view of FIG. 1, the left side view being a mirror image of FIG. 4;

FIG. 5 is an enlarged top view of FIG. 1; and,

FIG. 6 is an enlarged bottom view of FIG. 1.

The broken lines in the drawings of FIGS. 1-6 are included for the purpose of showing portions that form no part of the claimed design. 

CLAIM We claim the ornamental design for a writing instrument, as shown and described. 